Pressing-machine-operating mechanism



D ec. 13, 1927.

E. DAVIS PRESSING MACHINE OPERATING MECHANISH Filed Aug. 18, 1924 2 Sheets-Sheet l ATToRNEYs# Dmn 13, 1927. y1,552,706 E; DAVIS PRLVSING MACHINE OPERATING HECHANISK Filed Aug. 18, 1924 2 Sheets-Sheet 2 Q9 INVENTOR @mwyf/Q A TTORNEYS Patented Dec. 13, 1927.

msumsr Davis, or CHICAGO, TLLI'NoTs.

A ssIGNon, BY MESNE ASSIGNMENTS, To

LIBERTY NATIONAL BANK, TRUSTEE.

PRESSING-MACHINEPERTING V'lllIECHANISItL Applicationv led August 18, 1924. Serial No. 732,885,

This invention relates to pressing machines, particularly' machines such -as are used in garment laundries, etc., and has'for itsobject a particularly simple and. efficient operating and controlling means, by which the operator must use both hands to connect the powerto the machine-toclose the press, so that, it is impossible for the operator to have one or both hands between'the 510 -pressing elements when `the pressisclosing,

and also byxWhich if the opera-tor releaseshis-hold while the machine is closing -the and the machine will stop.

The inventionl consists in the novelA fea'- tures and in the combinations and construe'- tions hereinafter setforth and claimed.

In describingthisinvention reference-is had tothe accompanying drawings in which like characters designate corresponding partsin all thefviews.' i

Figure 1 is a sideelevationof a pressing machine embodying lmy invention.

Figure.v 2 isan enlarged -front elevation thereof. Figure 3 is an enlarged elevation, partly in section of the controlling means. 'Figure .4 is a detail View of one of the parts of the dilferential gearing.

power will be automatically disconnected Figure 5 vis a detailed sectional v iew' of the clutch yoperated by the controlling means;

Figure 6 is a detailv perspective -view of the motiontransmitting means between the .planetary member of the differential eari-ng .and the shifting lever for theclutch..

This invention comprises, generally, mechanism-for controlling Vthel closing of a pressing machine A such -mechanism includ 4o' lng tw'o operator-operated members or handles, idiiferential. gear4 mechanism between the' handles,l whereby both must be operated fully either simultaneously or alternately, and if operated alternatelyjthe oneirst operated must beheld in its operated position during the operation vofthe other leven-in orde-r to cause thedifferential gear to transmit motion to the shifting lever.. v y Y I have here illustrated my 'invention vas embodied vin a conventional type ofpress# ing machine, including a lower stationary Aelement or bckl, and a movable pressing element or head 2, v'movable toward and from the buck 1, the buck beinglmounted on a suitable bracket or goose neck 3 which is supported lupon a frame 4; and the head vbeing carried by a yoke or lever 5 pivoted at 6 between its end toa standard 7 which is an extension of the rear leg or pedestal 8 ofthe frame of the machine.

The actuating means for the head 2 in addition to the lever 5, as here illustrated,

comprises a toggle including links 9,10, pivote'dtogether at 1l, and intermittent power actuated means to actuate the toggle. The link 9 is pivoted at-12 to the rear arm of the lever 5, and the link 10 is pivoted at its lower e'nd at 13 tothe base of the frame,

his lever 13 having a forwardly extending power arm 14 rigid therewith through which thepower is intermittently applied from a constantly running electric motor 15.

The' link 10 and power arm 14 form in effect a bell. crank lever.

The motion of the` armature shaft 16 of the motor is transferred tothe power lever 14 through suitable mechanism including a periodic or half revolution clutch. This motion transmitting mechanism comprises .a shaft17 journalled in a suitable housing 18 lcarried by themain frame 4 and connected lby means of an eccentric or cam 19 and link 2O to the lever 14, a worm 21 is mounted on the armature shaft within the housing and meshing withthe worm gear 22 rotatable about the yshaft 17, and a clutch for connecting and disconnecting the worm gear 22 and the shaft '17, y

This clutch may be of any suitable form,

size and construction, and as here shown includes a shiftable section 23 mounted on the shaft; 17 and shiftable axially thereof, and pins as the pin 24 shiftable by the section 23 into and out ofholes as the hole 25 in the web of the gear 22. There are usually a plurality as three pins 24 and also a plurality of holes 25.v Usually there are three times as many holes 25 as there are pins,

although but one pin and one hole are 'shown' -for yillustrative purposes in the drawing. The pins are guided in their movement by a guide disk 26 having pas- Y sages through which the pins slide, this diskfbeing arranged. adjacent theworm gear 22. -An intermediate pressure ring 27 thrusts at 28l against shoulders' on the pins. Light springs 29 between the pressure ring and the section 23, yieldin ly thrusts the pins into engaged position a ter the sections 23 has been initially shifted and a heavy l hence shift the clutch `moved out of the depression and the pins spring 'thrusts against the section 23 to thrust it to its out position. The ends of the pins 24 and also the holes 25 are tapered, so that, the pins quickly release themselves fromtheholes 25 in the gear 22 when the force tending to Ahold them in the holes is discontinued. The light springs 29 serve to permit the pins 24 to yield when the section 23 is being shifted to the left andthe pins are not in alinement with the holes and to thrust the pins into theholes when they come into alinement. The .section 23rotates with the shaft as the member 26 iskeyed to the shaft and obviously the pins which are carried by this member'26 will cause the section 23 to be rotated withl the member 26 andhencewith the shaft'17.v

The clutch section 23 is shifted against the action of the main spring 30 by means of a shifting lever 31, located in the housing or casing 18 mounted on the rock shaft 32 journalled in the housing, the lever 31 `thrusting against the hub of the section 23. The section 23 is held in its in position by suitable nieans'as a cam ring 33 Xed to the casing 18 concentricwith the shaft 17, and having diametrically opposite notches 34 and plain faces 35, 35a betweenthenotches, and a follower 36 on the-section 23 coacting with the cam. rNorrnally the follower 36 is located in the notches 34 and one of the plain facesas a is preferably low at nearly the planes of the-bottoms of the notches. Upon operation of the shaft 32 to shift thesection 23 to the left, and in, the follower is 24 shifted into interlocking engagement a follower rides on the hi with the driving worm gear 22.

By holding the lhandles depressed the clutch is held in during the closing of thel press as the follower is opposite the low surface 35a of the cam and if the operator releases one or both handles the clutch will throw out andthe press head stop. After the shaft has made a half revolution the press is closed and the operator releases one or both hands from the handles. The operator determines by the feel of the machine when it is closed. After the press has remained closed as long as desired the operator momentarily depresses the handles until h plane face 35 and theclutch is heldin y the followers riding on the high plain face 35 until a follower again-alines with the notches.

The clutch construction forms no part of this invention and any `other suitable periodic mechanism may be used.

. The means forcontrolling theshifting of the clutch section 23 comprises two manually operated members, differential gearing'between the members, and motion transmitting means operated by the differential gearing. The operating members are here shown as a pair of handles 37, 38, mounted upon axially alined'rock shafts l39. 40, ,which are mounted in-suitable tubular housings 41 se'- cured to the frame ofthe machine, and secured together by ling as by clips or brackets 42. The rocking movement of 'thesev handles 37 and 38 is the vdierential gear hous.

limited by the end Walls 43 and44 of the slot-s in: the housing, `through which slots the handles project. rlhe differential gearling may be of any well known construction, and comprises side gears 45, 46 mounted respectively on opposing ends of the shafts 39 and-40, and planetary. compensating pinions 47 carried by a carrier or ring 48, and meshing with the side4 gears V45, 46. The carrier 48 has an arm 49 extending through a 'slot 50- in the' casing 51 for the gearing. This casing consists the tubular housing 41. Y Y The motion transmit-ting means between the differential gearing and the shifting lever'31 or the rock shaft 32 may be of any suitable form, size and construction, and as here shown consists of a link 52 connected at one end to the arm 49 and at its other end -to one arm of a bell crank lever 53 pivoted in horizontal position to the frame 4, and a link 55 4pivoted at one endl to the other arm of thebell crank lever,

thereon will be ,turned and the planetary or compensating pinions 47 will also be turned about their axes and transmit motion to thel other side gear, and vthe other handle in the reverse direction, and no motion will be transmitted to the shifting lever 31. lf both handles are depressed at the -same time, the carrier 48 will be moved, thus actuatingits arm 49 tol shift the leveri31, and hence, shiftsthe clutch to itsl in position. Movement of one of the levers 37, 38 downwardly moves t-he other lever upwardly, and the operator by maintaininghis hold on the lever first operated and then depressing the 'other lever will cause the shifting lever 31 to be shifted. In all cases both hands of the operator must be used at the same time to close the press. l

Vhat I claim is:

1*. Means forcontrolling the application of power comprising a shiftable member, a pair of rock shafts 'arranged in-aXial alinement, a handle mounted onea'ch shaft, gears 'mounted 'on 4the shafts respectively andv e planetary equalizing gear coacting with thf former gears and connections between thf planetary gear and the shiftable member foi transmitting the planetary movement there of tothe shiftable member.

2. Means forcontrolling the applicatio] of power comprising' af shiftable l'member f sections mounted on a pair of rock shafts, differential gearing between the rock shafts including a planetarily movable equalizing member, and means for transmitting the planetary movement of such member to the operating member,

3. In a pressing machine, the combination of coacting pressing elements, one movable toward and from the other, power means for actuating the movable element, and means for controlling the application of power to said element, comprising a shiftable member, a pair of'rock shafts, each having a handle, differential' gearing between said shafts including a planetary member, and motion transmitting connec* tions between the planetary member and the shiftable member.

4. In a pressing machine, the combination of coacting pressing elements, one movable toward and from the other, power means for actuating one of said elements, I

and means for controlling the application ot power to the movable element, comprising a shiftable member, a pair of rock shafts, each having a handle, differential gearing between said shafts including a planetary member, motion transmitting connections between the planetary member and the shifting member, and stops for limiting the movement of the handles.

In testimony whereof, I have hereunto signed my name, at Syracuse, in the county of Onondaga and State of New York this 21st day of July, 1924.

ERNEST DAVIS. 

